How to complete this? I've been chilling on the beach and nothing happens I've been checking the store and chilling on the beach but nothing happens
Check for any and all TASKS for other characters - listed on/before Day 74. Do those.
The tasks and events are interwoven. Not kinetically, but some rely on other character events first. Also - have you been to Story Store for a new gun? Did you follow someone from the Bar at night? Maybe look into those.